Developed by Huawei for highly efficient voice and data services transmission on a single platform, the OptiX OSN 2500 offers an intelligent, next-generation optical transmission solution. Used at the access and convergence layers of the Metropolitan Area Network (MAN), the OptiX OSN 2500 can also be networked with the other Huawei equipment to optimize customer investment.

Structure

The OptiX OSN 2500 subrack has a one-layer structure. The subrack consists of the slot area for processing boards, slot area for interface boards, slot area for the auxiliary interface board, power supply area and fan area.  

The functions of each subrack area are as follows:

• Slot area for the auxiliary interface board: This area is used to house the auxiliary interface board, which provides alarm interfaces, orderwire phone interface, management and maintenance interface, and clock interface.
• Slot area for interface boards: This area is used to house the tributary interface boards and Ethernet interface boards.
• Slot area for processing boards: This area is used to house the line, tributary and Ethernet processing boards, system auxiliary processing boards and the integrated boards of the cross-connect, timing and SCC units.
• Fan area: This area is used to house two fan modules, which dissipate the heat generated by the equipment.
• Power supply area: This area is used to house two PIU boards, which are used to supply power to the equipment.

Product application  

Highlight Features

Large switching capacity

60G high order, 20G low order

High integration

Subrack dimensions 472mm (H) x 447mm (W) x 295mm (D), 9 slots for processing boards before division of slots, 12 slots for processing boards and 8 slots for interface boards after division of slots

Flexible networking capacity

• Supports Mesh networking with plug-and-play network nodes
• Supports dynamic increase of rate and capacity
• Supports various networking topologies, including chain, ring, tangent rings, intersecting rings, etc
• Supporting maximum 2 STM-16 four-fiber MSP rings, 4 STM-16 two-fiber MSP rings, 8 STM-4 four-fiber MSP rings, 12 STM-4 two-fiber MSP rings

Carrier-class protection

• Mesh Protection and restoration(ASON)
• Distributed restorable rerouting protection
• 5-level service dedicated protection scheme based on different SLA: Diamond, Gold, Silver, Copper and Iron services
• SDH Network Protection
• 2/4 fiber MSP Ring; 1+1, 1: n Linear MSP; SNCP/SNCMP/SNCTP; Fiber shared virtual path protection; Fiber shared MSP Ring; DNI (ITU-T G.842)
• Service Protection
• Ethernet: RPR, RSTP
• ATM: VP-RING/VC-RING

Highly Reliable Design

• 1+1 hot backup for system control boards, cross-connect and synchronous timing boards
• 1+1 hot backup for power supply modules
• Redundancy protection for fan modules
• TPS protection
• 1:n tributary protection for E1/T1/E3/T3/ E4/STM-1(e)/FE

Enterprise-focused Features

• Intelligent ASON based Mesh network can against multi-node failures, improving network reliability by 10 times
• Single-span transmission for a distance of 270km without a Raman amplifier, fewer REGs to reduce the network construction cost and facilitate the maintenance
• Single-fiber bidirectional optical module to solve the problem of a lack of fiber resources, and built-in WDM to meet the large bandwidth requirements

Industry Certification

• Pass EN 50121-4 Railway EMC certification